package Thread;

import java.util.concurrent.locks.ReentrantLock;

//使用ReentrantLock锁类进行加锁操作，完成线程安全问题的解决；
public class Demo42 {
    private static int count=0;
    public static void main(String[] args) throws InterruptedException {
        ReentrantLock reentrantLock=new ReentrantLock();
        Thread t1=new Thread(new Runnable() {
            @Override
            public void run() {
                for(int i=0;i<5000;i++){
                    reentrantLock.lock();
                    try{
                        count++;
                    }finally {
                        reentrantLock.unlock();
                    }
                }
            }
        });
        Thread t2=new Thread(new Runnable() {
            @Override
            public void run() {
                for(int i=0;i<5000;i++){
                    reentrantLock.lock();
                    count++;
                    reentrantLock.unlock();
                }
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count="+count);
    }
}
